fix gateio derivative position error

[yancong001]

Before submitting this PR, please make sure:

• Your code builds clean without any errors or warnings
• You are using approved title ("feat/", "fix/", "docs/", "refactor/")

A description of the changes proposed in the pull request:
link to #6539
#6510

Tests performed by the developer:

dev-1.19, tested with perpetual_market_making strategy

Tips for QA testing:

[nikspz]

@yancong001 Could you please fix failing tests (add coverage)?

[rapcmia]

PR update:

• Test latest commit 5de82f82547fea
• Successfully opened a position
• Stop/exit the client and check if position will be retrieved when started again ✅
• Open a position manually and start perp-mm on client ✅
• When a position is open with take-profit order created, run exit -f:
  • Relaunch client and run the strategy again, able to retrieve the position and cancel the existing order that was left due to force exit
• Build docker image and ran same tests ✅

Note: PR good to be approved, thank you 🙇🏼

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Github workflow failed due to:

[cardosofede]

LGTM!